Llm. Vandeven et al., WHICH DRUG TO CHOOSE FOR STABLE ANGINA-PECTORIS - A COMPARATIVE-STUDYBETWEEN BISOPROLOL AND NITRATES, International journal of cardiology, 47(3), 1995, pp. 217-223
The choice between beta-blockade or nitrates as first line treatment f
or stable angina pectoris is based upon the different mechanisms of ac
tion and patient characteristics. We performed a clinical trial compar
ing the efficacy of the longacting beta-blocker bisoprolol once daily
and the short acting nitrate, isosorbide dinitrate, three times daily
in the reduction of anginal complaints in daily life and under stress.
Thirty patients were enrolled in a double-blind randomised cross-over
study. Both bisoprolol and isosorbide dinitrate were effective in red
ucing anginal attacks and nitroglycerin consumption significantly, but
bisoprolol was significantly more effective than isosorbide dinitrate
. Bisoprolol improved the workload during bicycle exercise testing sig
nificantly, but the improvement with isosorbide dinitrate was not sign
ificant. Despite the reduction in maximal rate pressure product, bisop
rolol was significantly (P < 0.05) more effective at improving total w
orkload and reducing the time to onset of angina than isosorbide dinit
rate. The rate pressure product did not change significantly with isos
orbide dinitrate. In this study, bisoprolol 10 mg once daily was more
effective and caused less side effects than isosorbide dinitrate 20 mg
three times a day. It seems questionable if monotherapy of isosorbide
dinitrate 20 mg t.i.d is an adequate drug regime for stable angina pe
ctoris.